Li, Shuang
Zhang, Xinan http://orcid.org/0000-0003-2670-018X
Zhang, Penglin
Sun, Xianwen
Zheng, Haiwu
Zhang, Weifeng
Funding for this research was provided by:
National Natural Science Foundation of China (U1504625)
Youth backbone teacher training program in He’nan province (2017GGJS021)
Program for Innovative Research Team in Science and Technology in University of Henan Province (19IRTSTHN019)
Foundation of Henan Educational Committee (12A510003)
Article History
Received: 28 May 2018
Accepted: 21 August 2018
First Online: 30 August 2018
Competing Interests
: The authors declare that they have no competing interests.
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